f2880a0e04
Also introduce a typedef VideoTrackSourceInterface to be able to start changing clients such as Chrome to use the name VideoTrackSourceInterface. Document: https://docs.google.com/a/google.com/document/d/1mEIw_0uDzyHjL3l8a82WKp6AvgR8Tlwn9JGvhbUjVpY/edit?usp=sharing BUG=webrtc:5426 Review URL: https://codereview.webrtc.org/1758223002 Cr-Commit-Position: refs/heads/master@{#11854}
94 lines
3.1 KiB
C++
94 lines
3.1 KiB
C++
/*
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* Copyright 2012 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_API_VIDEOSOURCE_H_
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#define WEBRTC_API_VIDEOSOURCE_H_
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#include <list>
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#include "webrtc/api/mediastreaminterface.h"
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#include "webrtc/api/notifier.h"
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#include "webrtc/api/videosourceinterface.h"
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#include "webrtc/api/videotrackrenderers.h"
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#include "webrtc/base/asyncinvoker.h"
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#include "webrtc/base/scoped_ptr.h"
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#include "webrtc/base/sigslot.h"
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#include "webrtc/media/base/videosinkinterface.h"
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#include "webrtc/media/base/videocapturer.h"
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#include "webrtc/media/base/videocommon.h"
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// VideoSource implements VideoSourceInterface. It owns a
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// cricket::VideoCapturer and make sure the camera is started at a resolution
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// that honors the constraints.
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// The state is set depending on the result of starting the capturer.
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// If the constraint can't be met or the capturer fails to start, the state
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// transition to kEnded, otherwise it transitions to kLive.
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namespace webrtc {
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class MediaConstraintsInterface;
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class VideoSource : public Notifier<VideoSourceInterface>,
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public sigslot::has_slots<> {
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public:
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// Creates an instance of VideoSource.
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// VideoSource take ownership of |capturer|.
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// |constraints| can be NULL and in that case the camera is opened using a
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// default resolution.
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static rtc::scoped_refptr<VideoSource> Create(
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rtc::Thread* worker_thread,
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cricket::VideoCapturer* capturer,
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const webrtc::MediaConstraintsInterface* constraints,
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bool remote);
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SourceState state() const override { return state_; }
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bool remote() const override { return remote_; }
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virtual const cricket::VideoOptions* options() const { return &options_; }
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virtual cricket::VideoCapturer* GetVideoCapturer() {
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return video_capturer_.get();
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}
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void Stop() override;
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void Restart() override;
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void AddOrUpdateSink(rtc::VideoSinkInterface<cricket::VideoFrame>* sink,
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const rtc::VideoSinkWants& wants) override;
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void RemoveSink(rtc::VideoSinkInterface<cricket::VideoFrame>* sink) override;
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protected:
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VideoSource(rtc::Thread* worker_thread,
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cricket::VideoCapturer* capturer,
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bool remote);
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virtual ~VideoSource();
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void Initialize(const webrtc::MediaConstraintsInterface* constraints);
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private:
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void OnStateChange(cricket::VideoCapturer* capturer,
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cricket::CaptureState capture_state);
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void SetState(SourceState new_state);
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rtc::Thread* signaling_thread_;
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rtc::Thread* worker_thread_;
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rtc::AsyncInvoker invoker_;
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rtc::scoped_ptr<cricket::VideoCapturer> video_capturer_;
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bool started_;
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rtc::scoped_ptr<cricket::VideoRenderer> frame_input_;
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cricket::VideoFormat format_;
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cricket::VideoOptions options_;
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SourceState state_;
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const bool remote_;
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};
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} // namespace webrtc
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#endif // WEBRTC_API_VIDEOSOURCE_H_
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